Interleaving mechanism



May 27 1924. 1,495,634

.1. J. EDWARDS INTERLEAVING MECHANISM Filed March G, 1922 4 Sheets-Sheet1 .y mfy.

May v27, 1924. 1,495,634

J. J. EDWARDS INTERLEAVING MECHANISM Filed March 6, 1922 4 Sheets-Sheet2 May 27, 1924. 1,495,634

J. J. EDWARDS INTERLEAVING MECHANI SM Filed March 6, 1922 4 SheetS-Sheet5 21 ,9 J6 ZZ JJ w? il? I waemm' ffzzmwaas, @a new. a @M wtgf.

May 27 1924.

J. J. EDWARDS INTERLEAVING MECHANISM Filed March 6, 1922 4 Sheets-Sheet4 Patented May 27, 1924.

Jenn Jynnweans, or, minimiser., -ii/rrcniefaiv.

in'rnntnevrue Meenemen.

Application filed March 6, ,1322. VSerial No. 541,267.

To all inkom t may concern.'

lie it known that I, .Ici-IN J. EDWARDS, residing at Ann Arbor, in thecounty of yl/Vashtenaw and State of Michigan, a citizen of the UnitedStates, have invented certain new and useful Improvements inInterleaving Mechanism, of which the following is a specification. v

rIhe object of this invention is to provide. simple, compact andefficient means for inserting'absorbing or blotter sheets betweenprinted sheets as the latter are delivered from a duplicating mechanism,thereby avoiding smearing of the freshly-printed sheet and olfsetting ofthe impression from one printed sheet to the back of a supel'- posedprinted sheet. been heretofore suggested for accomplishing the statedresult but none has beensatisfactory in all respects, some being costlyto install and necessitating more or less rebuilding of the duplicatingmechanism or the supporting framework for the same while others couldnot be voperated with any speed or efficiency. My invention provides aninterleaving apparatus which may be easily applied to any duplicatingmechanism at a very low cost and may beV operated eiliciently at thesame speed as the duplicating'mechanism. The invention is especiallyappli- 4 cable to machines embodying a rotary drum upon which a stencilis'secured to make va printing impression upon a sheet fed past the drumby the rotation of the latter, although it may be used in connectionwith other forms of duplicating mechanism.

In the accompanying drawings,

Figure 1 is a side elevation of an apparatus embodying my invention.

Figure 2 is av plan view of theV same. Figure 3 is an end elevation.Figure 4 is a transverse section on the line 4 4 of Figure 1 v Figure 5is a longitudinal section. the vertically movable support for the sheetsbeing omitted.

Figure 6 is an enlarged longitudinal section of the means actingdirectly on the blotter or interleaving sheets. l j

Figure 7 is an enlarged detail section showing the means for securingand adjusting the support for the printed and interleaved sheets.

. I have illustrated a duplicatingA mecha.

nism comprising a supporting frame 1"in which is mounted a duplicatingor stencil Various devices haveV drum or cylinder 2 which may be drivenby a motor 3 throughV suitable gearing, as shown in Figure-1, -or may bedirectly rotated. through a hand crank 4, as shown in Figure 2. Theprinted sheets are delivered into a receptacle 'which will preferably beprovided withl a vertically movable bottom If the delivered sheet isrequired to drop a considerable distance it has atendency to buckle andfold instead of lying flat on the platform or bottom 51. fore, providemeans whereby the 'platform may be secured at La comparatively highpoint when the work is started and may be lowered as the pile of printedand interieaved sheets increases. Upon vone side of thepreceptacle, Isecure a bracket 52'which is also secured to theupperv end of avpost orleg 53, the side of the receptacle being constructed `with a verticalnotch oropenended slot 54 alined with thev post. `The platform 51 iscarried upon the guide arms 55, V56 which extend through and play in theslot 54 and are provided at their ends with eyes 57,' 58 encircling thepost 53 whereby to guide the movement of the platform. It will bereadily noted that theend portion 59 of the lower guide arm 56 iscarried downwardly so that the guiding eyes 57 and 58 willvbe separatedto produce an extendedV guiding engagement with the post and reducetheliability of the platform to sway. The post 53 is .provided 'with `aplurality ,of sockets or notches 60 in its front side and a latch pinv61 playsv through the portion 59 of the lower guide arm' to engage anyone of said' notches or 'sockets and thereby secure Itheplatform atadesired height. The latch pin is carried-by'a'latching lever 62 whichis loosely mounted onV a'fpin or screw 63 inserted through the leverinto the guide arms 61 from' the socket inv which it isv engagedwhereupon the platform may descend. When the platform'has been loweredsufficiently, the pressure on the handle 64 is 'released and the llatchpin 61 engaged in vanother socket A VGO, aswill be' readily understood.VY

At the rear of the receptacle 5 and spaced I, there- A 10 are fed overthe roll 6 to be deposited in the receptacle and they are held in closefrictional contact with the feeding roll, so as to be moved forward bythe rotation of the roll, by a pressure roll 11 rotatably mounted in abracket 12 which is fitted upon a rod 13 and secured in a setpositionthereon by a set screw 14 secured in the bracket and bearing upon therod as shown and as will be readily understood.V The rod 13 Vhas apivotal movement at its ends in the supporting frame and, at one end,-is constructed with a pendent crank 15 to which and to some'xed memberis secured a spring 16 which tends constantly to swing the bracket 12downwardly and thereby hold the pressure roll to the feed roll.V Thespring 16may, of course, be attached to any stationary object and isshown attached to one of a pair of bearing arms or brackets 17 dependingfrom the sides of a magazine, tray or feed table 18 upon which thesheets 10 are piled. The magazine is secured to the main supportingframe and projects rearwardly therefrom, the rolls 6and 11 being locatedimmediately in advance of the magazine. ris shown clearly in Figure 6,the interleaving sheets 10 are piled in the magazine with their, loweror front ends immediately adjacent the bight presented by the rolls 6and 11. To cause the top sheet to enter the bight and be engaged by therolls, I provide a feeder finger or pusher 19 which bears upon thesheets and have its working face covered with rubber or otherfriction-creating material, indicated at 20, and the surface of the roll6 mav be of like material. The pusher or feeder finger 19 is split atits upper end, as at 21, to be engaged about a transverse carrier rod orbar 22 and securedthereon by clamping plates 2,3 and bolts 24. the boltsbeing inserted through the pusher above and below the carrier and theclampingp/lates serving also to secure the friction 'cover 20 in place.The. carrier rod 22 is supported by 'rocking' arms 25 which arejournaled in the bearing plates or brackets 17 and may be connected, asatk26. One end of the carrier 22 is bent downward, as at 27 and on saiddownturned arm is adjustablysecured a weight 26 which holds the carrierrod and the pusher in such position that the pusher will bear upon thesheets 10. To permit the pusher to be raised so that additional sheetsmay be placed in rotated from the main driving pulley 9 throughintermediate gearing, as -ll be readily understood. By this a n ment,rotation of the crank head 34 will effect reciprocation of the pitmanwhich, in turn will cause oscillation of the arms 25 so that the pusherwill be moved forward and back over the pile of sheets. By securing theend of the pitman at the proper point in the length of the crank 34, thestroke of the pitman will be timed so that the pusher will feed theblotter sheets forward to the feed rollers at the proper intervals tointerleave the printed sheets, it being understood that the feed rollerswill engage a sheet whenever it may be fed forward to them.

In rear of the pusher, a stop and holder is provided to prevent backwardmovement of the top sheet when the pusher is returning to its normalposition after having fed a sheet to the feed and presser rolls. devicecomprises a transverse arm 35 pivotally mounted at its outer end upon apost 86 of any convenient form fixed upon the tray or magazine, and aweight 37 carried by the arm and of a weight proportionate to the weightand quality of the paper or board used. On the front side of the weight,at the lower edge thereof, is a stop or plate 38 which rests upon thetop interleaving sheet slightly in advance of the rear end thereof, asshown in Figure 6.

The interleaving 0r blotter sheets do not pass from the feed roll 6directly into the receptacle 5 but are supported temporarily above thereceptacle while a printed sheet is delivered thereinto. The temporarysupport consists of a pair of lingers 39 projecting forwardly over therear wall of the receptacle and having their rear portions 40 extendingdown in rear of the receptacle i and secured radially in rock shafts 41which are journaled in bearings provided therefor on the main frame andthe rear end of the receptacle. As shown in Figures 3 and 4, a link 42is pivoted at one end to the rear portion 40 of one of the fingers 39above the fulcrum of the same while the opposite endf of said link ispivoted to the inner end of push rod 43 disposed below the fulcrums orrock shafts 41. The end of the push rod is also pivoted to a crank 44depending from the rook shaft 41 at that same side of the machine, theresult of the arrangement being that whenthe push bar This is actuatedthe fingers will be simultane- *il* Cil ously rocked in oppositedirections. The parts are held in normal positions by. a spring 45 whichis secured at 1ts opposite ends to the push rod and to the member 40more remote from the crank 44, respectively. When the push rod is forcedinwardly, the fingers are swung toward each other to assume thepositions shown in dotted lines in Figure 2 to receive and support theblotter sheet; the spring 45 will also be put under increased tension sothat when the pressure on the push rod is released the spring will atonce contract and the fingers will be rocked outwardly, the sheetdropping between them into the receptacle. The outer end of the push rodis pivoted to a crank pin 46 projecting radially from a verticallydisposed rock shaft 47 mounted in a bracket 48 secured on the side ofthe main frame. Near the upper end of the rock shaft 47, a crank pin 49projects therefrom, and a tappet or striker 50 is secured to and dependsfrom the pitman 33 and is adapted to impinge upon the pin 49 which isheld in the path of the tappet through the iniiuence of the spring 45.

rIhe operation will be readily understood. At each revolution of theprinting or duplicating drum. a sheet is printed and fed from under thedrum into the receptacle, said sheet passing under the fingers 39. Thecrank 34, of course, rotates constantly as the drum 2 is operated andthe pitman 33 is thereby reciprocated. The supply of blotter orinterleaving sheets is placed in the tray or magazine 18, as shown inFigure 6, the sheets being arranged in stepped relation. The gravitatingholder and stop 37 bears with its plate 38 upon the uppermost sheetadjacent the rear end thereof and acts as a drag so that while theentire pile of sheets will be fed forward to a slight degree, theuppermost sheet will be drawn from under the holder, as the pusher 19moves forwardly whereupon the holder will drop onto the second sheetdirectly in rear of the top sheet, the feeding of more than one sheet ata time being thus avoided. The forward movement of the pitman 33obviously effects a forward movement of the pusher 19 which pushes thetop sheet into the bight of the rolls 6 and 1l, and, as the roll 6rotates constantly, the sheet will be at once engaged and fed forwardonto the pins 39 which have been swung inwardly to receive it. On itsreturn movement, the pusher will slide o-ver the top sheet withoutimparting movement thereto, this result being due to the inclinedposition of the pusher. The forward movement of the pitman also carriesthe tappet 50 against the crank pin 49 and thereby turns the rock shaft47 so that the push rod 43 will be forced inwardly thereby causing thefingere -39 to swing'to-ward each other, as above described,to supportthe sheet issuingbetween the rolls 6 and ll. As the pitman movesrearwardly, the fingers will recede and drop the blotter sheet ontotheprinted sheet which, in the meanwhile, has been delivered into thereceptacle.

It will be readily noted that my improved apparatus is simple andcompact, may be applied to any duplicating machine without necessitatingany substantial reorganization of the said machine, and may be operatedefficiently at the same speed as the du )licating mechanism.

raving thus fully described my invention, what I claim as new and desireto secure by Letters Patent of the United States is rl. The combinationwith a duplicating mechanism, and a receptacle for sheets delivered bysaid mechanism, yof means for temporarily supportingy an iinterleavingsheet over said receptacle,a`magazine for theV interleaving sheets,means for feeding sheets singly and successively from the magazine tothe supporting means, and means for periodically operating thesupporting means to deposit the interleaving sheets in the receptacle tointerleave with the sheets delivered by the duplicating mechanism, saidlast mentioned means being operatively connected with and actuated bythe duplicating mechanism.`

2. The combination with a duplicating mechanism, and a receptacle forsheets delivered by said mechanism, of means for temporarily supportingan interleaving sheet over said receptacle, a magazine for theinterleaving sheets, means for feeding sheets singly and successivelyfrom the magazine to the supporting means, and means for periodicallyoperating the supporting means to deposit the interleaving sheets in thereceptacle.

3. The combination with a duplicating mechanism, and a receptacle forsheets delivered by said mechanism, of means for temporarily supportingsheet over the receptacle, a magazine for .the interleaving sheets,means for feeding sheets singly and successively from the magazine tothe supporting means, means to operate the supporting means whereby todeposit the supported sheet in the receptacle, and means in the magazineto maintain the sheets in stepped relation.

4. In interleaving apparatus, the combination of a receptacle,supporting lingers projecting over the receptacle, means for holdingsaid fingers normally apart, and means for swinging said fingers towardeach other to support a sheet.

5. In interleaving apparatus, the combination of a receptacle,supporting lingers projecting o-ver the receptacle, rock shafts disposedin rear of the receptacle and carryanY interleaving ing said fingers,and means for simultane ously rocking said shafts in opposite directionswhereby to cause the fingers to approach or recede.

6. In interleaving apparatus, the con'iloination of supporting fingers,a push rod disposed transversely of the fingers, operative connectionsbetween the push rod and the fingers whereby to effect simultaneousmovenient of the fingers in opposite directions, a vertically disposedrock shaft, a crank projecting radially from said shaft and pivoted tothe push rod, and ineans for rocking' said shaft.

7. ln interleaving` apparatus, the combination of supporting fingers, apush rod disposed transversely of the fingers, operative connectionsbetween the push rod and the fingers whereby to effect simultaneousmovement of the fingers in opposite directions, a vertically disposedrock shaft, a crank projecting radially from said shaft and pivoted tothe push rod, a pitinan reciprocating across the axial plane of saidshaft, a second crank projecting from said shaft, and a tappet carriedhy said pitnian and arranged to impinge against said second crank.

8. The combination of av duplicating mechanism, a receptacle in rear ofsaid mechanism for printed sheets delivered by the same, a'rnagazine inrear of the receptacle, and ineans for feeding sheets from the magazineinto the receptacle to interleave With the sheets delivered by theduplicating niechanisin, said last-mentioned means loeing operativelyconnected with and actuated by the duplica/ting' mechanism.

In testirnony whereof I hereunto af'iX my signature.

JOHN J. EDVARDS.

